Home / 74,745.05-112,085.07-21,425.28

Finding the Fourth Proportional to 74,745.05, 112,085.07 and 21,425.28

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Solution

The fourth proportional to 74,745.05, 112,085.07 and 21,425.28 is: 32,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,745.05 : 112,085.07 = 21,425.28 : x
  2. Step 2: Convert to fraction form
    74,745.05/112,085.07 = 21,425.28/x
  3. Step 3: Cross multiply
    74,745.05x = 112,085.07 × 21,425.28
  4. Step 4: Simplify right side
    74,745.05x = 2,401,454,008.57
  5. Step 5: Solve for x
    x = 2,401,454,008.57/74,745.05
  6. Step 6: Final answer
    x = 32,128.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.